It's my project vehicle bought last year with 164K miles and a spotty OCI history averaging around 25K miles...chronic P0016 bank 1 intake cam position correlation error code and visibly elongated main timing chain. I've put nearly 10K miles on it thus far with short OCIs of QSUD 5W-30, most recently filled with Amsoil SSO 0W-30 and 15oz of LubeGuard moly additive. Goal is to reduce the sludge before I open it up to replace the timing set and clean the oil sump this Summer, so the new parts aren't bathed in old gunk.
I pulled a sample at ~3700 miles and sent to Blackstone, also changed and cut the Toyota filter as shown in the pic. Bear in mind this filter mounts upside down on top of the engine, the sludge seems to adhere to the steel can wherever it lands.
I pulled a sample at ~3700 miles and sent to Blackstone, also changed and cut the Toyota filter as shown in the pic. Bear in mind this filter mounts upside down on top of the engine, the sludge seems to adhere to the steel can wherever it lands.